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Norm
ÖNORM EN ISO 3744
Issue date: 2009 12 01
Acoustics - Determination of sound power levels of noise sources using sound pressure - Engineering method in an essentially free field over a reflecting plane (ISO 3744:1994)
This International Standard specifies a method for measuring the sound pressure levels on a measurement surface enveloping a noise source, under essentially free-field co...
Withdrawn: 2011 03 01
§ Legal References
Publisher:
Austrian Standards International
Format:
Digital | 28 Pages
Language:
German
| English
Currently valid:
Optionally co-design standards:
ICS
This International Standard specifies a method for measuring the sound pressure levels on a measurement surface enveloping a noise source, under essentially free-field conditions near one or more
reflecting planes, in order to calculate the sound power level produced by the noise source. It gives requirements for the test environment and instrumentation, as well as techniques for obtaining the surface sound pressure level from which the sound power level of the source is calculated, leading to results which have a grade 2 accuracy. It is important that specific noise test codes for various
types of equipment be established and used in accordance with this International Standard. For each type of equipment, such noise test codes will give detailed requirements on mounting, loading and operating conditions for the equipment under test as well as a selection of the measurement surface and the microphone array as specified in this International Standard.
ÖNORM EN ISO 3744
2011 03 01
Acoustics - Determination of sound power levels and sound energy levels of noise sources using sound...
Norm
ÖNORM EN ISO 3744
2009 12 01
Acoustics - Determination of sound power levels of noise sources using sound pressure - Engineering ...
Norm
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ÖNORM EN ISO 3744
1996 05 01
Acoustics - Determination of sound power levels of noise sources using sound pressure - Engineering ...
Norm
ÖNORM S 5034
1978 05 01
Determination of sound power of noise sources; free-field measurement over a reflecting plane
Norm
Norm
Issue date :
1985 01 24
Acoustics — Measurement of sound absorption in a reverberation room
Norm
Issue date :
1979 11 01
Acoustics — Guide to International Standards on the measurement of airborne acoustical noise and evaluation of its effects on human beings
Norm
Issue date :
1977 05 01
Acoustics — Determination of sound power levels of noise sources — Precision methods for anechoic and semi-anechoic rooms
Norm
Issue date :
1987 05 21
Acoustics — Determination of sound power levels of noise sources — Survey method using a reference sound source
Norm
Issue date :
1990 10 11
Acoustics — Determination of sound power levels of noise sources — Requirements for the performance and calibration of reference sound sources
Norm
Issue date :
1985 12 19
Acoustics — Statistical methods for determining and verifying stated noise emission values of machinery and equipment — Part 1: General considerations and definitions
Norm
Issue date :
1985 12 19
Acoustics — Statistical methods for determining and verifying stated noise emission values of machinery and equipment — Part 4: Methods for stated values for batches of machines
Norm
Issue date :
2011 03 01
Acoustics - Determination of sound power levels and sound energy levels of noise sources using sound pressure - Engineering methods for an essentially free field over a reflecting plane (ISO 3744:2010)
Norm
Issue date :
1994 05 05
Acoustics — Determination of sound power levels of noise sources using sound pressure — Engineering method in an essentially free field over a reflecting plane